Year % of female population 1960 33.3737601572889 1961 33.475101074005 1962 33.4596176131946 1963 33.3285014398476 1964 33.0725051870437 1965 32.6965597549253 1966 32.2037976673124 1967 31.6105375214235 1968 30.9624818475306 1969 30.2856992502592 1970 29.5298051944771 1971 28.7364823825753 1972 27.9515561100332 1973 27.143628097972 1974 26.3417152568382 1975 25.560936178157 1976 24.8040804924909 1977 24.0720755272981 1978 23.3540882750509 1979 22.674746216507 1980 22.0915922668717 1981 21.6482878513721 1982 21.3336614368238 1983 21.0877999445062 1984 20.8573975305329 1985 20.6110676345712 1986 20.3849636338341 1987 20.2348861500523 1988 20.1355040224924 1989 20.0567810757899 1990 20.0150212013405 1991 20.0100555515071 1992 19.9996258997635 1993 19.9462717588769 1994 19.8372402807241 1995 19.6820361722867 1996 19.4994987662324 1997 19.2948215068478 1998 19.0646891917345 1999 18.8092210542442 2000 18.5361672932852 2001 18.2556259455884 2002 17.9799716654375 2003 17.706601497801 2004 17.415089310213 2005 17.099143012888 2006 16.791563443535 2007 16.5331393619027 2008 16.3251973983836 2009 16.1436825680019 2010 15.9792700389832 2011 15.8535203498951 2012 15.7838621155348 2013 15.7553343869451 2014 15.7515563597478 2015 15.7679471430537 2016 15.7713123746531 2017 15.7240816468855 2018 15.6380071703627 2019 15.5369401586521 2020 15.420582123865 2021 15.2842254907344 2022 15.1264961317096 2023 14.9544015684061